Use Rscript to call the "rmarkdown" render function on currently open .rmd file

RenderRMarkdown

" have vimr-plugin call rmarkdown::render
function! RenderRMarkdown()
  " set autoread to supress W11 warning:
  " vim is going to complain about the rmd file already existing...
  :set autoread
  " get full file path via %:p
  ! Rscript -e "rmarkdown::render(commandArgs(TRUE)[2])" --args %:p
endfunction

" call RenderRMarkdown silently to suppress the "Press ENTER to continue" prompt
nnoremap <F2> :silent :call RenderRMarkdown() <CR>